Is 3 the battle against the plague
White supremacists carried medieval signs in Charlottesville because the miedeval signs are used by people in France and Britain to represent a time of racial purity in their country that never existed and never will exist. In general, white supremacists just want to make up fantasies of a time that never existed with the miedeval signs.
The 15th Amendment to the Constitution granted African American men the right to vote by declaring that the "right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude."
To answer your first question, social darwinism is a theory that supports the rich getting richer. Republican party is based around this theory. Since they believe that those who are the fittest get the money, there is no reason to help the poor, because that is their fault. We can also attach to this the theory of mercantilism where everyone get what they truly deserve. On the other hand, social gospel movement is a christian movement that wanted to help the poor based on christian values. This movement applied christian ethics to social problems such as poverty, delinquency, racism, child labor and so on.
Virginia has the largest number with a total of 292,627 slaves